US20230018750A1 - Retaining ring and method of manufacture - Google Patents
Retaining ring and method of manufacture Download PDFInfo
- Publication number
- US20230018750A1 US20230018750A1 US17/378,101 US202117378101A US2023018750A1 US 20230018750 A1 US20230018750 A1 US 20230018750A1 US 202117378101 A US202117378101 A US 202117378101A US 2023018750 A1 US2023018750 A1 US 2023018750A1
- Authority
- US
- United States
- Prior art keywords
- ring portion
- ring
- valve plug
- retaining ring
- retaining
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000004519 manufacturing process Methods 0.000 title claims description 15
- 238000000034 method Methods 0.000 title description 14
- 239000000463 material Substances 0.000 claims description 7
- 229910000831 Steel Inorganic materials 0.000 claims description 6
- 239000010959 steel Substances 0.000 claims description 6
- 230000000295 complement effect Effects 0.000 claims description 5
- 238000001125 extrusion Methods 0.000 description 11
- 230000000712 assembly Effects 0.000 description 5
- 238000000429 assembly Methods 0.000 description 5
- 238000012986 modification Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 230000007246 mechanism Effects 0.000 description 3
- 239000012530 fluid Substances 0.000 description 2
- 230000014509 gene expression Effects 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 229910000792 Monel Inorganic materials 0.000 description 1
- 229910000990 Ni alloy Inorganic materials 0.000 description 1
- 239000004696 Poly ether ether ketone Substances 0.000 description 1
- 229910001347 Stellite Inorganic materials 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- JUPQTSLXMOCDHR-UHFFFAOYSA-N benzene-1,4-diol;bis(4-fluorophenyl)methanone Chemical compound OC1=CC=C(O)C=C1.C1=CC(F)=CC=C1C(=O)C1=CC=C(F)C=C1 JUPQTSLXMOCDHR-UHFFFAOYSA-N 0.000 description 1
- AHICWQREWHDHHF-UHFFFAOYSA-N chromium;cobalt;iron;manganese;methane;molybdenum;nickel;silicon;tungsten Chemical compound C.[Si].[Cr].[Mn].[Fe].[Co].[Ni].[Mo].[W] AHICWQREWHDHHF-UHFFFAOYSA-N 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 229910000856 hastalloy Inorganic materials 0.000 description 1
- 229910001026 inconel Inorganic materials 0.000 description 1
- 229920002530 polyetherether ketone Polymers 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 229910001256 stainless steel alloy Inorganic materials 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
- 239000012815 thermoplastic material Substances 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
- F16K3/30—Details
- F16K3/314—Forms or constructions of slides; Attachment of the slide to the spindle
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
- F16K3/22—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with sealing faces shaped as surfaces of solids of revolution
- F16K3/24—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with sealing faces shaped as surfaces of solids of revolution with cylindrical valve members
- F16K3/243—Packings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
- F16K5/08—Details
- F16K5/14—Special arrangements for separating the sealing faces or for pressing them together
- F16K5/18—Special arrangements for separating the sealing faces or for pressing them together for plugs with cylindrical surfaces
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
- F16K3/30—Details
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
- F16K3/30—Details
- F16K3/316—Guiding of the slide
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K41/00—Spindle sealings
- F16K41/02—Spindle sealings with stuffing-box ; Sealing rings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
- F16K5/02—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having conical surfaces; Packings therefor
- F16K5/0257—Packings
- F16K5/0271—Packings between housing and plug
Definitions
- the present disclosure relates generally to valve retaining rings and methods for using and manufacturing the same. Specifically, the disclosure is directed to improved retaining rings for use with a valve assembly and a method of manufacturing the same.
- Valve plugs that utilize a seal often require a retaining ring to secure the seal to the plug.
- the retaining rings typically involve spiral wound retaining rings having various material restrictions. Such retaining rings are often difficult to assemble in the context of the valve plug and valve cage. Further, the spiral wound retaining rings may be unusable if the valve assembly undergoes even slight design changes.
- a retaining ring for a valve plug assembly includes a first ring portion having an inner surface with a central axis extending along a circumference of the first ring portion, and a rib disposed on the inner surface of the first ring portion and offset from the central axis.
- the retaining ring also includes a second ring portion having an inner surface with a central axis extending along a circumference of the second ring portion, and a rib disposed on the inner surface of the second ring portion and offset from the central axis.
- the second ring portion is coupled to the first ring portion such that each of the ribs disposed on the inner surfaces of the first and second ring portions are configured to mate with a groove of a valve plug.
- a valve plug assembly including a valve cage and a valve plug disposed within the valve cage.
- the valve plug also includes a groove.
- the valve plug assembly also includes a retaining ring disposed between the valve plug and the valve cage, the retaining ring including a first ring portion having an inner surface and a rib disposed on the inner surface. The rib disposed on the inner surface of the first ring portion is received in the groove of the valve plug.
- the valve assembly further includes a second ring portion having an inner surface and a rib disposed on the inner surface of the second ring portion. The rib disposed on the second ring portion is received in the groove of the valve plug.
- the valve cage confines the retaining ring on the valve plug and secures both the rib on the first ring portion and the rib on the second ring portion in the groove of the valve plug.
- a method of manufacturing a retaining ring including forming a ring having an inner surface defining a central axis disposed along a circumference of the ring.
- the method additionally includes disposing a rib on the inner surface of the ring offset from the central axis dividing the ring into a first ring portion and a second ring portion.
- the retaining ring for a valve plug assembly may further include any one or more of the following preferred forms.
- the first ring portion includes an end portion having a first interlocking feature and the second ring portion includes an end portion having a second interlocking feature, the first and second interlocking features configured to couple the first ring portion to the second ring portion.
- first and second interlocking features comprise complementary cleats.
- At least one of the rib disposed on the inner surface of the first ring portion and the rib disposed on the inner surface of the second ring portion includes a tapering tip distal the inner surface.
- the retaining ring is made of steel or another material having at least one property similar to steel.
- At least one of an outer surface of the first ring portion and an outer surface of the second ring portion includes a marking.
- the marking includes a groove disposed on the outer surface.
- the valve plug includes a distal end having a first diameter and a proximal end having a second diameter, less than the first diameter, the groove disposed on the proximal end of the valve plug, and the inner surface and an outer surface of the first ring portion and the second ring portion define a thickness, the thickness equal to the difference between the first diameter and the second diameter of the valve plug.
- At least one of the rib disposed on the inner surface of the first ring portion and the rib disposed on the inner surface of the second ring portion includes a tapering tip distal the inner surface.
- the inner surface of the first ring portion has a central axis extending along a circumference of the first ring portion and the inner surface of the second ring portion has a central axis extending along a circumference of the second ring portion, and at least one of: (1) the rib disposed on the inner surface of the first ring portion is offset from the central axis of the first ring portion; and (2) the rib disposed on the inner surface of the second ring portion is offset from the central axis of the second ring portion.
- At least one of an outer surface of the first ring portion and an outer surface of the second ring portion includes a marking offset from the central axis of the first ring portion or the second ring portion, respectively.
- forming the ring and disposing the rib on the inner surface of the ring includes lathing.
- dividing the ring into a first ring portion and a second ring portion includes cutting the retaining ring.
- cutting the retaining ring includes cutting complementary cleats into the first ring portion and the second ring portion.
- first interlocking feature on an end portion of the first ring portion and a second interlocking feature on an end portion of the second ring portion, the first and second interlocking features configured to couple the first ring portion to the second ring portion.
- FIG. 1 is a partial, sectional view of a valve assembly including a retaining ring in accordance with the principles disclosed herein;
- FIG. 2 is an exploded view of the valve plug of FIG. 1 including the retaining ring;
- FIG. 3 is a perspective view of the retaining ring in accordance with the principles disclosed herein;
- FIG. 4 is a side view of the retaining ring in accordance with the principles disclosed herein;
- FIG. 5 is a side view of a portion of the retaining ring in accordance with the principles disclosed herein;
- FIG. 6 perspective view of an alternative retaining ring in accordance with the principles disclosed herein;
- FIG. 7 cross-sectional view of another alternative retaining ring coupled to a valve plug in accordance with the principles disclosed herein.
- Valve assemblies including valve plugs are configured to include seals.
- the seals disposed in valve assemblies are provided to prevent fluid leaking around the valve plug and out of the valve assembly.
- the seal must be retained in the valve assembly over the pressure of the fluid passing through the valve assembly.
- the seal requires a retaining ring to secure the seal in the seal assembly.
- FIG. 1 illustrates a valve assembly 100 in accordance with the principles disclosed herein.
- the valve assembly 100 includes a valve cage 102 , a valve plug 104 , and a seal assembly 106 .
- the valve cage 102 includes a generally cylindrical body 112 having an aperture 114 . Additionally, the aperture 114 is cylindrical and passes through the cylindrical body 112 . Alternatively, the aperture 114 could be a different shape or pass only partly through the cylindrical body 112 . Furthermore, the cylindrical body 112 may additionally include at least one opening 116 (see also FIG. 2 ). As shown in FIG. 1 , the opening 116 is disposed in the cylindrical body, perpendicular to a longitudinal axis 118 of the valve cage 102 .
- the valve plug 104 is configured to be received in the aperture 114 of the valve cage 102 .
- the valve plug 104 includes a distal end 122 and a proximal end 124 .
- the distal end 122 defines a first diameter and the proximal end 124 of the valve plug 104 defines a second diameter less than the first diameter of the distal end 122 .
- the difference between the first diameter and the second diameter is between approximately 0.1 inches (in) to approximately 0.5 in.
- the distal end 122 of the valve plug 104 is approximately the same size as the aperture 114 (e.g., 1 in, 3 in, 5 in, 10 in, etc.).
- the distal end 122 is clearance fit with the aperture 114 .
- the valve plug 104 may include a valve stem 126 disposed on the proximal end 124 . As shown in FIG. 1 , the valve plug 104 , including the distal end 122 and the proximal end 124 , and the valve stem 126 are coaxial, having a longitudinal axis 128 . The longitudinal axis 128 is also coaxial with the longitudinal axis 118 .
- the seal assembly 106 includes a seal 142 , an anti-extrusion ring 144 , and a retaining ring 146 having a rib 148 .
- the anti-extrusion ring 144 is not necessary, and the seal assembly 106 includes only the seal 142 and the retaining ring 146 .
- Both the seal 142 and the anti-extrusion ring 144 generally form an annulus having an inner diameter approximately equal to the second diameter of the proximal end 124 of the valve plug 104 and an outer diameter approximately equal to the first diameter of the distal end 122 of the valve plug 104 .
- the seal 142 may be any seal known in the art and configured to seal the valve assembly 100 .
- the rib 148 of the retaining ring 146 is configured to be disposed in a groove 150 of the valve plug 104 . More specifically, the rib 148 is mechanically coupled with the groove 150 allows an inner surface 152 of the retaining ring 146 to contact the proximal end 124 of the valve plug 104 . Additionally or alternatively, an outer surface 154 of the retaining ring 146 contacts the valve cage 102 . Accordingly, when the retaining ring 146 is disposed on the valve plug 104 inside the valve cage 102 , the retaining ring 146 cannot move longitudinally relative the valve plug 104 because the rib 148 is mechanically coupled in the groove 150 .
- the retaining ring 146 is made of various materials including normal metals, corrosive resistant metals, synthetic materials, or nature-made materials.
- the retaining ring 146 may be made of a stainless steel alloy (e.g., 316 L), a thermoplastic material (e.g., PEEK), a nickel alloy (e.g., Inconel, Monel, Hastelloy), an aluminum alloy, stellite, or another alloy similarly used in valves.
- valve assembly 100 an exploded view of a valve assembly 100 is depicted.
- the seal 142 is placed on the proximal end 124 of the valve plug 104 .
- the valve assembly 100 includes the anti-extrusion ring 144 on the proximal end of the valve plug 104 adjacent the seal 142 .
- the anti-extrusion ring 144 is included when the valve assembly 100 is used in a high temperature service.
- the retaining ring 146 may include a first ring portion 146 a and a second ring portion 146 b .
- the first ring portion 146 a and the second ring portion 146 b are configured to couple to the valve plug 104 .
- the first ring portion 146 a includes a first rib 184 a
- the second ring portion 146 b includes a second rib 148 b .
- Each of the first and second ribs 148 a and 148 b are disposed on the inner surfaces of the first and second ring portions 146 a and 146 b and are configured to mate with the groove 150 of the valve plug 104 .
- the seal assembly 106 is formed by the seal 142 , the anti-extrusion ring 144 , and the first and second retaining rings 146 a and 146 b.
- valve plug 104 After the seal assembly 106 is disposed on the valve plug 104 , the valve plug 104 is placed into the valve cage 102 .
- the valve plug 104 is able to move axially in the valve cage 102 , but the valve cage 102 confines both the first and second ring portions 146 a and 146 b of the retaining ring 146 on the valve plug 104 .
- Confining the first and second ring portions 146 a and 146 b secures the rib 148 a on the first ring portion 146 a and the rib 148 b on the second ring portion 146 b in the groove 150 of the valve plug 104 .
- the retaining ring 146 is prevented from moving relative the valve plug 104 .
- FIGS. 3 , 4 , and 5 illustrate the retaining ring 146 of FIGS. 1 and 2 .
- FIG. 4 illustrates a side view of the second ring portion 146 b of FIG. 3 .
- FIG. 5 illustrates a side view of the first ring portion 146 a of FIG. 3 .
- the retaining ring 146 includes a small gap 310 between the first ring portion 146 a and the second ring portion 146 b .
- the gap 310 is equal to a thickness of a blade or other cutting mechanism used to cut the retaining ring 146 .
- the gap 310 is about 0.01 inches (in), in another example, the gap 310 is about 0.03 in, and in yet other examples, the gap 310 is one of about 0.05 in, 0.1 in, 0.25 in, depending upon the thickness of the blade or other cutting mechanism used.
- the gap 310 provides sufficient tolerance for the first and second ring portions 146 a and 146 b to pivot and bend to better accommodate the seal 142 and anti-extrusion ring 144 , in some examples, upon assembly and during use of valve assembly 100 .
- FIG. 4 illustrates an outer surface 314 b of the second ring portion 146 b .
- the first ring portion 146 a has an outer surface 314 a substantially similar to the outer surface 314 b (shown in FIG. 3 ).
- the outer surface 314 b includes a marking 320 b , defining a groove.
- the marking 320 b is a rectangular groove; however, the marking 320 b may comprise an etching, a painted pattern, a differently shaped groove, or any other visible indication and still fall within the scope of the present disclosure.
- the outer surface 314 b additionally includes a central axis 322 disposed along the circumference of the second ring portion 146 b .
- the marking 320 b is offset from the central axis 322 . As shown in FIG. 3 , the marking 320 b disposed on the second ring portion 314 b is substantially similar to the marking 320 a disposed on the first ring portion 314 a.
- the first ring portion 146 a of the retaining ring 146 is depicted. As shown, the first ring portion 146 a has an inner surface 312 a with a central axis 315 extending along a circumference of the first ring portion 146 a .
- the rib 148 a of the first ring portion 146 a is disposed on the inner surface 312 a and offset from the central axis 315 .
- the rib 148 a may be offset to accommodate the anti-extrusion ring 144 in a first orientation of the first ring portion 146 a and for the first ring portion 146 a to directly abut a seal (e.g., seal 142 ) in a second orientation.
- the second ring portion 146 b is designed substantially similar to the first ring portion 146 a , with respect to an inner surface 312 b , the central axis 315 , and the rib 148 b.
- the marking 320 a is also offset from the central axis 322 on the outer surface 314 a
- the rib 148 a is offset from the central axis 315 on the inner surface 312 a
- both the rib 148 a and the marking 320 a are offset in the same direction from the corresponding central axis 315 and 320 , respectively.
- the markings 320 a and 320 b can be used to quickly identify the orientation of the first and second ring portions 146 a and 146 b . So configured, the markings 320 a and 320 b aid operators in quickly assembling the valve plug (e.g., valve plug 104 of FIG. 1 ).
- FIG. 6 is a perspective view of an alternative retaining ring 602 in accordance with the principles disclosed herein.
- the retaining ring 602 includes an interlocking feature 610 .
- the retaining ring 602 may be secured onto a valve plug (e.g., valve plug 104 ) before the valve plug and retaining ring 602 are disposed in a valve cage (e.g., valve cage 102 ).
- the retaining ring 602 of FIG. 6 includes many of the same features as the retaining ring 146 . For the sake of brevity, such features are not explained here again and include the same reference numerals as FIGS. 1 - 5 , when relevant, for clarity.
- the first ring portion 146 a includes an end portion 111 a having a first interlocking feature 612 a and the second ring portion 146 b includes an end portion 111 b having a second interlocking feature 612 b .
- the first and second interlocking features 612 a and 612 b are configured to couple the first ring portion 146 a to the second ring portion 146 b .
- the first and second interlocking features 612 a and 612 b comprise complementary cleats, as illustrated.
- FIG. 7 illustrates a cross-sectional view of another alternative retaining ring 700 coupled to the valve plug 104 in accordance with the principles disclosed herein.
- the retaining ring 700 of FIG. 7 includes many of the same features as the retaining ring 146 and valve assembly 100 of FIG. 1 , for example. For the sake of brevity, such features are not explained here again and include the same reference numerals as FIGS. 1 - 5 , when relevant, for clarity.
- the alternative retaining ring 700 includes a rib 710 , including a tapering tip 712 , disposed on an inner surface 714 of the retaining ring 700 . Accordingly, the tapering tip 712 self-centers within the groove 150 of the valve plug 104 . Additionally, the retaining ring 700 includes a marking 720 disposed on the outer surface. As illustrated, the marking 720 disposed on an outer surface 722 of the retaining ring 700 includes a triangular groove 724 , in contrast to the rectangular grooves 320 a and 320 b of FIGS. 3 - 6 , for example. It will be understood that the triangular groove 724 may alternatively take the form of various other shapes and still fall within the scope of the present disclosure.
- the retaining ring 146 may be manufactured according to the following method. Specifically, and in one example, the retaining ring 146 , 602 , 700 may be lathed from a blank. The blank is lathed to have the inner surface 312 a and 312 b and the outer surface 314 a and 314 b . The retaining ring 146 is lathed such that the rib 148 a and 148 b is disposed on the inner surface 312 a and 312 b of the retaining ring 146 , and in some examples, offset from the central axis 315 .
- the retaining ring 146 is divided into the first ring portion 146 a and the second ring portion 146 b .
- dividing the retaining ring 146 , 602 , 700 into the first ring portion 146 a and the second ring portion 146 b includes cutting the retaining ring 146 with, for example, a band saw.
- various other known cutting mechanisms may be additionally and/or alternatively be used to cut the retaining ring 146 and still fall within the scope of the present disclosure.
- the retaining ring 146 can be manufactured in any known manufacturing method.
- the retaining ring 146 can be manufactured via various known additive manufacturing and extrusion manufacturing methods.
- the new retaining rings 146 , 602 , and 700 and related method of manufacturing include several advantages.
- the retaining rings 146 , 602 , and 700 are easily manufactured compared to previous retaining rings.
- the retaining rings 146 , 602 , and 700 can be configured to have a first and second orientation, the first orientation accommodating an anti-extrusion ring 144 and a second orientation directly securing a valve seal 142 .
- retaining rings 146 , 602 , and 700 are adaptable to a wider variety of valve assemblies than other retaining rings.
- the retaining rings 146 , 602 , and 700 are easily assembled on a valve plug 104 by inserting the ribs 148 a and 148 b in a groove 150 disposed on the valve plug 104 . As a result, these retaining rings 146 , 602 , 700 reduce costs and time in assembling valve assemblies.
Abstract
Description
- The present disclosure relates generally to valve retaining rings and methods for using and manufacturing the same. Specifically, the disclosure is directed to improved retaining rings for use with a valve assembly and a method of manufacturing the same.
- Valve plugs that utilize a seal often require a retaining ring to secure the seal to the plug. The retaining rings typically involve spiral wound retaining rings having various material restrictions. Such retaining rings are often difficult to assemble in the context of the valve plug and valve cage. Further, the spiral wound retaining rings may be unusable if the valve assembly undergoes even slight design changes.
- In accordance with a first exemplary aspect, a retaining ring for a valve plug assembly is disclosed. The retaining ring includes a first ring portion having an inner surface with a central axis extending along a circumference of the first ring portion, and a rib disposed on the inner surface of the first ring portion and offset from the central axis. The retaining ring also includes a second ring portion having an inner surface with a central axis extending along a circumference of the second ring portion, and a rib disposed on the inner surface of the second ring portion and offset from the central axis. The second ring portion is coupled to the first ring portion such that each of the ribs disposed on the inner surfaces of the first and second ring portions are configured to mate with a groove of a valve plug.
- In accordance with another exemplary aspect of the present disclosure, a valve plug assembly including a valve cage and a valve plug disposed within the valve cage is disclosed. The valve plug also includes a groove. The valve plug assembly also includes a retaining ring disposed between the valve plug and the valve cage, the retaining ring including a first ring portion having an inner surface and a rib disposed on the inner surface. The rib disposed on the inner surface of the first ring portion is received in the groove of the valve plug. The valve assembly further includes a second ring portion having an inner surface and a rib disposed on the inner surface of the second ring portion. The rib disposed on the second ring portion is received in the groove of the valve plug. In the valve plug assembly, the valve cage confines the retaining ring on the valve plug and secures both the rib on the first ring portion and the rib on the second ring portion in the groove of the valve plug.
- In accordance with another exemplary aspect of the present disclosure, a method of manufacturing a retaining ring is disclosed. The method including forming a ring having an inner surface defining a central axis disposed along a circumference of the ring. The method additionally includes disposing a rib on the inner surface of the ring offset from the central axis dividing the ring into a first ring portion and a second ring portion.
- In further accordance with any one of the foregoing exemplary aspects, the retaining ring for a valve plug assembly, the valve plug assembly including a valve cage, and/or the method of manufacturing a retaining ring may further include any one or more of the following preferred forms.
- In some preferred forms, the first ring portion includes an end portion having a first interlocking feature and the second ring portion includes an end portion having a second interlocking feature, the first and second interlocking features configured to couple the first ring portion to the second ring portion.
- In another form, the first and second interlocking features comprise complementary cleats.
- In yet another form, at least one of the rib disposed on the inner surface of the first ring portion and the rib disposed on the inner surface of the second ring portion includes a tapering tip distal the inner surface.
- In still another form, the retaining ring is made of steel or another material having at least one property similar to steel.
- In yet another form, at least one of an outer surface of the first ring portion and an outer surface of the second ring portion includes a marking.
- In another form, the marking includes a groove disposed on the outer surface.
- In still another form, the valve plug includes a distal end having a first diameter and a proximal end having a second diameter, less than the first diameter, the groove disposed on the proximal end of the valve plug, and the inner surface and an outer surface of the first ring portion and the second ring portion define a thickness, the thickness equal to the difference between the first diameter and the second diameter of the valve plug.
- In another form, at least one of the rib disposed on the inner surface of the first ring portion and the rib disposed on the inner surface of the second ring portion includes a tapering tip distal the inner surface.
- In yet another form, the inner surface of the first ring portion has a central axis extending along a circumference of the first ring portion and the inner surface of the second ring portion has a central axis extending along a circumference of the second ring portion, and at least one of: (1) the rib disposed on the inner surface of the first ring portion is offset from the central axis of the first ring portion; and (2) the rib disposed on the inner surface of the second ring portion is offset from the central axis of the second ring portion.
- In another form, at least one of an outer surface of the first ring portion and an outer surface of the second ring portion includes a marking offset from the central axis of the first ring portion or the second ring portion, respectively.
- In a preferred method, forming the ring and disposing the rib on the inner surface of the ring includes lathing.
- In yet another method, dividing the ring into a first ring portion and a second ring portion includes cutting the retaining ring.
- In another method, cutting the retaining ring includes cutting complementary cleats into the first ring portion and the second ring portion.
- In still another method, forming a first interlocking feature on an end portion of the first ring portion and a second interlocking feature on an end portion of the second ring portion, the first and second interlocking features configured to couple the first ring portion to the second ring portion.
- These and other features and advantages of the various exemplary embodiments disclosed herein will be better understood with respect to the following description and drawings, in which:
-
FIG. 1 is a partial, sectional view of a valve assembly including a retaining ring in accordance with the principles disclosed herein; -
FIG. 2 is an exploded view of the valve plug ofFIG. 1 including the retaining ring; -
FIG. 3 is a perspective view of the retaining ring in accordance with the principles disclosed herein; -
FIG. 4 is a side view of the retaining ring in accordance with the principles disclosed herein; -
FIG. 5 is a side view of a portion of the retaining ring in accordance with the principles disclosed herein; -
FIG. 6 perspective view of an alternative retaining ring in accordance with the principles disclosed herein; -
FIG. 7 cross-sectional view of another alternative retaining ring coupled to a valve plug in accordance with the principles disclosed herein. - It is believed that the disclosure will be more fully understood from the following description taken in conjunction with the accompanying drawings. Some of the drawings may have been simplified by the omission of selected elements for the purpose of more clearly showing other elements. Such omissions of elements in some drawings are not necessarily indicative of the presence or absence of particular elements in any of the exemplary embodiments, except as may be explicitly delineated in the corresponding written description. Also, none of the drawings are necessarily to scale.
- Skilled artisans will appreciate that elements in the figures are illustrated for simplicity and clarity and have not necessarily been drawn to scale. For example, the dimensions and/or relative positioning of some of the elements in the figures may be exaggerated relative to other elements to help to improve understanding of various embodiments of the present invention. Also, common but well-understood elements that are useful or necessary in a commercially feasible embodiment are often not depicted in order to facilitate a less obstructed view of these various embodiments. It will further be appreciated that certain actions and/or steps may be described or depicted in a particular order of occurrence while those skilled in the art will understand that such specificity with respect to sequence is not actually required. It will also be understood that the terms and expressions used herein have the ordinary technical meaning as is accorded to such terms and expressions by persons skilled in the technical field as set forth above except where different specific meanings have otherwise been set forth herein.
- Valve assemblies including valve plugs are configured to include seals. The seals disposed in valve assemblies are provided to prevent fluid leaking around the valve plug and out of the valve assembly. The seal must be retained in the valve assembly over the pressure of the fluid passing through the valve assembly. In some examples, the seal requires a retaining ring to secure the seal in the seal assembly.
-
FIG. 1 illustrates avalve assembly 100 in accordance with the principles disclosed herein. Thevalve assembly 100 includes avalve cage 102, avalve plug 104, and aseal assembly 106. - The
valve cage 102 includes a generallycylindrical body 112 having anaperture 114. Additionally, theaperture 114 is cylindrical and passes through thecylindrical body 112. Alternatively, theaperture 114 could be a different shape or pass only partly through thecylindrical body 112. Furthermore, thecylindrical body 112 may additionally include at least one opening 116 (see alsoFIG. 2 ). As shown inFIG. 1 , theopening 116 is disposed in the cylindrical body, perpendicular to a longitudinal axis 118 of thevalve cage 102. - The
valve plug 104 is configured to be received in theaperture 114 of thevalve cage 102. As shown, thevalve plug 104 includes adistal end 122 and aproximal end 124. In various embodiments, thedistal end 122 defines a first diameter and theproximal end 124 of thevalve plug 104 defines a second diameter less than the first diameter of thedistal end 122. In various embodiments, the difference between the first diameter and the second diameter is between approximately 0.1 inches (in) to approximately 0.5 in. Additionally, thedistal end 122 of thevalve plug 104 is approximately the same size as the aperture 114 (e.g., 1 in, 3 in, 5 in, 10 in, etc.). In some examples, thedistal end 122 is clearance fit with theaperture 114. Furthermore, thevalve plug 104 may include avalve stem 126 disposed on theproximal end 124. As shown inFIG. 1 , thevalve plug 104, including thedistal end 122 and theproximal end 124, and thevalve stem 126 are coaxial, having a longitudinal axis 128. The longitudinal axis 128 is also coaxial with the longitudinal axis 118. - Still referring to
FIG. 1 , theseal assembly 106 includes aseal 142, ananti-extrusion ring 144, and a retainingring 146 having arib 148. In some embodiments, theanti-extrusion ring 144 is not necessary, and theseal assembly 106 includes only theseal 142 and the retainingring 146. Both theseal 142 and theanti-extrusion ring 144 generally form an annulus having an inner diameter approximately equal to the second diameter of theproximal end 124 of thevalve plug 104 and an outer diameter approximately equal to the first diameter of thedistal end 122 of thevalve plug 104. Theseal 142 may be any seal known in the art and configured to seal thevalve assembly 100. - The
rib 148 of the retainingring 146 is configured to be disposed in agroove 150 of thevalve plug 104. More specifically, therib 148 is mechanically coupled with thegroove 150 allows aninner surface 152 of the retainingring 146 to contact theproximal end 124 of thevalve plug 104. Additionally or alternatively, anouter surface 154 of the retainingring 146 contacts thevalve cage 102. Accordingly, when the retainingring 146 is disposed on thevalve plug 104 inside thevalve cage 102, the retainingring 146 cannot move longitudinally relative thevalve plug 104 because therib 148 is mechanically coupled in thegroove 150. In addition, neither therib 148 nor the retainingring 146 can move radially away from thegroove 150 at least because theouter surface 154 is in contact with thevalve cage 102. In various embodiments, the retainingring 146 is made of various materials including normal metals, corrosive resistant metals, synthetic materials, or nature-made materials. For example, the retainingring 146 may be made of a stainless steel alloy (e.g., 316L), a thermoplastic material (e.g., PEEK), a nickel alloy (e.g., Inconel, Monel, Hastelloy), an aluminum alloy, stellite, or another alloy similarly used in valves. - Referring now to
FIG. 2 , an exploded view of avalve assembly 100 is depicted. Theseal 142 is placed on theproximal end 124 of thevalve plug 104. Additionally, in this example, thevalve assembly 100 includes theanti-extrusion ring 144 on the proximal end of thevalve plug 104 adjacent theseal 142. In various embodiments, theanti-extrusion ring 144 is included when thevalve assembly 100 is used in a high temperature service. - As further depicted in
FIG. 2 , the retainingring 146 may include afirst ring portion 146 a and asecond ring portion 146 b. Thefirst ring portion 146 a and thesecond ring portion 146 b are configured to couple to thevalve plug 104. Thefirst ring portion 146 a includes a first rib 184 a, and thesecond ring portion 146 b includes asecond rib 148 b. Each of the first andsecond ribs second ring portions groove 150 of thevalve plug 104. When the first andsecond ring portions valve plug 104, adjacent theseal 142 and theanti-extrusion ring 144, theseal assembly 106 is formed by theseal 142, theanti-extrusion ring 144, and the first and second retaining rings 146 a and 146 b. - After the
seal assembly 106 is disposed on thevalve plug 104, thevalve plug 104 is placed into thevalve cage 102. Thevalve plug 104 is able to move axially in thevalve cage 102, but thevalve cage 102 confines both the first andsecond ring portions ring 146 on thevalve plug 104. Confining the first andsecond ring portions rib 148 a on thefirst ring portion 146 a and therib 148 b on thesecond ring portion 146 b in thegroove 150 of thevalve plug 104. As a result, the retainingring 146 is prevented from moving relative thevalve plug 104. -
FIGS. 3, 4, and 5 illustrate the retainingring 146 ofFIGS. 1 and 2 .FIG. 4 illustrates a side view of thesecond ring portion 146 b ofFIG. 3 . Additionally,FIG. 5 illustrates a side view of thefirst ring portion 146 a ofFIG. 3 . - Referring now to
FIG. 3 , the first andsecond ring portions ring 146 are depicted coupled together to form the annulus. The retainingring 146 includes asmall gap 310 between thefirst ring portion 146 a and thesecond ring portion 146 b. In one example, thegap 310 is equal to a thickness of a blade or other cutting mechanism used to cut the retainingring 146. In one example, thegap 310 is about 0.01 inches (in), in another example, thegap 310 is about 0.03 in, and in yet other examples, thegap 310 is one of about 0.05 in, 0.1 in, 0.25 in, depending upon the thickness of the blade or other cutting mechanism used. Thegap 310 provides sufficient tolerance for the first andsecond ring portions seal 142 andanti-extrusion ring 144, in some examples, upon assembly and during use ofvalve assembly 100. -
FIG. 4 illustrates anouter surface 314 b of thesecond ring portion 146 b. Thefirst ring portion 146 a has anouter surface 314 a substantially similar to theouter surface 314 b (shown inFIG. 3 ). As shown, theouter surface 314 b includes a marking 320 b, defining a groove. As shown, the marking 320 b is a rectangular groove; however, the marking 320 b may comprise an etching, a painted pattern, a differently shaped groove, or any other visible indication and still fall within the scope of the present disclosure. Further, theouter surface 314 b additionally includes acentral axis 322 disposed along the circumference of thesecond ring portion 146 b. In various embodiments, the marking 320 b is offset from thecentral axis 322. As shown inFIG. 3 , the marking 320 b disposed on thesecond ring portion 314 b is substantially similar to the marking 320 a disposed on thefirst ring portion 314 a. - Referring now to
FIG. 5 , thefirst ring portion 146 a of the retainingring 146 is depicted. As shown, thefirst ring portion 146 a has aninner surface 312 a with acentral axis 315 extending along a circumference of thefirst ring portion 146 a. Therib 148 a of thefirst ring portion 146 a is disposed on theinner surface 312 a and offset from thecentral axis 315. For example, therib 148 a may be offset to accommodate theanti-extrusion ring 144 in a first orientation of thefirst ring portion 146 a and for thefirst ring portion 146 a to directly abut a seal (e.g., seal 142) in a second orientation. Thesecond ring portion 146 b is designed substantially similar to thefirst ring portion 146 a, with respect to aninner surface 312 b, thecentral axis 315, and therib 148 b. - As shown in
FIG. 5 , the marking 320 a is also offset from thecentral axis 322 on theouter surface 314 a, and therib 148 a is offset from thecentral axis 315 on theinner surface 312 a. Additionally, in this example, both therib 148 a and the marking 320 a are offset in the same direction from the correspondingcentral axis 315 and 320, respectively. As a result, themarkings second ring portions markings valve plug 104 ofFIG. 1 ). -
FIG. 6 is a perspective view of analternative retaining ring 602 in accordance with the principles disclosed herein. As shown inFIG. 6 , and unlike the retainingring 146 ofFIGS. 1-5 , the retainingring 602 includes aninterlocking feature 610. As a result, the retainingring 602 may be secured onto a valve plug (e.g., valve plug 104) before the valve plug and retainingring 602 are disposed in a valve cage (e.g., valve cage 102). Aside from this difference, the retainingring 602 ofFIG. 6 includes many of the same features as the retainingring 146. For the sake of brevity, such features are not explained here again and include the same reference numerals asFIGS. 1-5 , when relevant, for clarity. - As illustrated, and more specifically, the
first ring portion 146 a includes an end portion 111 a having afirst interlocking feature 612 a and thesecond ring portion 146 b includes anend portion 111 b having asecond interlocking feature 612 b. The first and second interlocking features 612 a and 612 b are configured to couple thefirst ring portion 146 a to thesecond ring portion 146 b. In various embodiments, the first and second interlocking features 612 a and 612 b comprise complementary cleats, as illustrated. -
FIG. 7 illustrates a cross-sectional view of anotheralternative retaining ring 700 coupled to thevalve plug 104 in accordance with the principles disclosed herein. The retainingring 700 ofFIG. 7 includes many of the same features as the retainingring 146 andvalve assembly 100 ofFIG. 1 , for example. For the sake of brevity, such features are not explained here again and include the same reference numerals asFIGS. 1-5 , when relevant, for clarity. - As illustrated, and unlike the retaining
ring 146, thealternative retaining ring 700 includes arib 710, including atapering tip 712, disposed on aninner surface 714 of the retainingring 700. Accordingly, the taperingtip 712 self-centers within thegroove 150 of thevalve plug 104. Additionally, the retainingring 700 includes a marking 720 disposed on the outer surface. As illustrated, the marking 720 disposed on anouter surface 722 of the retainingring 700 includes a triangular groove 724, in contrast to therectangular grooves FIGS. 3-6 , for example. It will be understood that the triangular groove 724 may alternatively take the form of various other shapes and still fall within the scope of the present disclosure. - In view of the foregoing, it will be understood that the retaining
ring 146 may be manufactured according to the following method. Specifically, and in one example, the retainingring inner surface outer surface ring 146 is lathed such that therib inner surface ring 146, and in some examples, offset from thecentral axis 315. After theretaining ring 146 andrib ring 146 is divided into thefirst ring portion 146 a and thesecond ring portion 146 b. In various embodiments, dividing the retainingring first ring portion 146 a and thesecond ring portion 146 b includes cutting the retainingring 146 with, for example, a band saw. However, as will be appreciated, various other known cutting mechanisms may be additionally and/or alternatively be used to cut the retainingring 146 and still fall within the scope of the present disclosure. - Alternatively, the retaining
ring 146 can be manufactured in any known manufacturing method. For example the retainingring 146 can be manufactured via various known additive manufacturing and extrusion manufacturing methods. - At least in view of the foregoing, it will be understood that the new retaining rings 146, 602, and 700 and related method of manufacturing include several advantages. For example, the retaining rings 146, 602, and 700 are easily manufactured compared to previous retaining rings. Additionally, the retaining rings 146, 602, and 700 can be configured to have a first and second orientation, the first orientation accommodating an
anti-extrusion ring 144 and a second orientation directly securing avalve seal 142. Accordingly, retainingrings valve plug 104 by inserting theribs groove 150 disposed on thevalve plug 104. As a result, these retainingrings - While the apparatus and methods of the present disclosure have been described in connection with various embodiments, it will be understood that the apparatus and methods of the present disclosure are capable of further modifications. This application is intended to cover any variations, uses, or adaptations of the apparatus and methods following, in general, the principles of the present disclosure, and including such departures from the present disclosure as, within the known and customary practice within the art to which the disclosure pertains.
- Furthermore, it is noted that the construction and arrangement of the disclosed retaining ring, and their various components and assemblies, as shown in the various exemplary embodiments is illustrative only. Although only a few embodiments of the subject matter at issue have been described in detail in the present disclosure, those skilled in the art who review the present disclosure will readily appreciate that many modifications are possible (e.g., variations in sizes, dimensions, structures, shapes and proportions of the various elements, values of parameters, mounting arrangements, use of materials, colors, orientations, etc.) without materially departing from the novel teachings and advantages of the subject matter disclosed herein. For example, elements shown as integrally formed may be constructed of multiple parts or elements, and vice versa. Also, the position of elements may be reversed or otherwise varied, and the nature or number of discrete elements or positions may be altered or varied. Accordingly, all such modifications are intended to be included within the scope of the present disclosure as defined in the appended claims. Furthermore, the order or sequence of any process or method steps may be varied or re-sequenced according to alternative embodiments. Other substitutions, modifications, changes and omissions may be made in the design, operating conditions and arrangement of the various exemplary embodiments without departing from the scope of the present disclosure.
Claims (20)
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US17/378,101 US20230018750A1 (en) | 2021-07-16 | 2021-07-16 | Retaining ring and method of manufacture |
CN202210854444.6A CN115614493A (en) | 2021-07-16 | 2022-07-15 | Retaining ring and method for producing same |
CN202221836689.8U CN218818280U (en) | 2021-07-16 | 2022-07-15 | Retaining ring for a valve plug assembly and valve plug assembly |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US17/378,101 US20230018750A1 (en) | 2021-07-16 | 2021-07-16 | Retaining ring and method of manufacture |
Publications (1)
Publication Number | Publication Date |
---|---|
US20230018750A1 true US20230018750A1 (en) | 2023-01-19 |
Family
ID=84856347
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US17/378,101 Pending US20230018750A1 (en) | 2021-07-16 | 2021-07-16 | Retaining ring and method of manufacture |
Country Status (2)
Country | Link |
---|---|
US (1) | US20230018750A1 (en) |
CN (2) | CN218818280U (en) |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2601085A (en) * | 1948-09-04 | 1952-06-17 | Wagner Electric Corp | Split retaining ring arrangement for piston packing |
US5531536A (en) * | 1995-01-24 | 1996-07-02 | Carolina Knife Company, Inc. | Split slitter |
US7303179B2 (en) * | 2005-03-18 | 2007-12-04 | Fisher Controls International Llc | Split packing follower for use with valves |
US8146883B2 (en) * | 2007-08-23 | 2012-04-03 | Fisher Controls International Llc | Apparatus to connect a valve stem to a valve member |
US8292264B2 (en) * | 2006-12-22 | 2012-10-23 | Samson Aktiengesellschaft | Flow adjustment apparatus and method for limiting the travel of an actuating rod of an actuator of the flow adjustment apparatus |
US9441757B2 (en) * | 2005-12-21 | 2016-09-13 | Fisher Controls International Llc | Load relieving stem connectors |
US9702411B2 (en) * | 2014-04-10 | 2017-07-11 | Roller Bearing Company Of America, Inc. | Bearing assembly with split outer ring having interference fit tabs and method of assembly of bearing |
US10883611B2 (en) * | 2017-10-02 | 2021-01-05 | Fisher Controls International Llc | Replaceable valve plug tip |
-
2021
- 2021-07-16 US US17/378,101 patent/US20230018750A1/en active Pending
-
2022
- 2022-07-15 CN CN202221836689.8U patent/CN218818280U/en active Active
- 2022-07-15 CN CN202210854444.6A patent/CN115614493A/en active Pending
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2601085A (en) * | 1948-09-04 | 1952-06-17 | Wagner Electric Corp | Split retaining ring arrangement for piston packing |
US5531536A (en) * | 1995-01-24 | 1996-07-02 | Carolina Knife Company, Inc. | Split slitter |
US7303179B2 (en) * | 2005-03-18 | 2007-12-04 | Fisher Controls International Llc | Split packing follower for use with valves |
US9441757B2 (en) * | 2005-12-21 | 2016-09-13 | Fisher Controls International Llc | Load relieving stem connectors |
US8292264B2 (en) * | 2006-12-22 | 2012-10-23 | Samson Aktiengesellschaft | Flow adjustment apparatus and method for limiting the travel of an actuating rod of an actuator of the flow adjustment apparatus |
US8146883B2 (en) * | 2007-08-23 | 2012-04-03 | Fisher Controls International Llc | Apparatus to connect a valve stem to a valve member |
US9702411B2 (en) * | 2014-04-10 | 2017-07-11 | Roller Bearing Company Of America, Inc. | Bearing assembly with split outer ring having interference fit tabs and method of assembly of bearing |
US10883611B2 (en) * | 2017-10-02 | 2021-01-05 | Fisher Controls International Llc | Replaceable valve plug tip |
Also Published As
Publication number | Publication date |
---|---|
CN218818280U (en) | 2023-04-07 |
CN115614493A (en) | 2023-01-17 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US10520092B2 (en) | Seal assemblies for extreme temperatures and related methods | |
US8181970B2 (en) | Unitized bi-directional seal assembly | |
US3947944A (en) | Shaft seal unitized transfer fixture | |
WO2016148006A1 (en) | Seal ring | |
US9334995B2 (en) | Single lock and double lock couplings having a locking ring with identifying indicia and methods of use and assembly | |
US9127771B2 (en) | Fluid pressure apparatus | |
US4415167A (en) | Assembled multi-component seal | |
EP3070378B1 (en) | Divided mechanical seal | |
JP2008144964A (en) | Assembly consisting of device for oscillating on bell crank fork, variable pitch commutator control system equipped therewith, and aircraft engine provided therewith | |
US9328625B2 (en) | Ram bearing assembly, seal assembly therefor and associated method | |
EP3070379B1 (en) | Mechanical seal | |
EP2172678B1 (en) | Seal device | |
JP2008190570A (en) | Seal ring | |
US4986168A (en) | Piston and multilayer piston ring set | |
US20230018750A1 (en) | Retaining ring and method of manufacture | |
EP0733177B1 (en) | Machined shaft seal encased in an elastomeric sleeve | |
JP2017129239A (en) | Valve core | |
US20150218958A1 (en) | Seal structure of rotary machine and gas turbine equipped with same | |
JP2010144789A (en) | Backup ring and sealing device | |
JP4597116B2 (en) | Mechanical seal, shaft seal device, and seal ring for them | |
JP2006183764A (en) | Joint | |
JP7008657B2 (en) | Valve core | |
JPS6234056Y2 (en) | ||
US11623168B2 (en) | Filter element | |
US20030111795A1 (en) | Leak path device, and methods of constructing and utilizing same |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: FISHER CONTROLS INTERNATIONAL LLC, IOWA Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:SCHMITT, LUCAS J.;HOSTETTER, STEVEN;ANDERSON, AARON;SIGNING DATES FROM 20210726 TO 20210729;REEL/FRAME:057030/0811 |
|
STPP | Information on status: patent application and granting procedure in general |
Free format text: FINAL REJECTION MAILED |
|
STPP | Information on status: patent application and granting procedure in general |
Free format text: ADVISORY ACTION MAILED |
|
STPP | Information on status: patent application and granting procedure in general |
Free format text: RESPONSE AFTER FINAL ACTION FORWARDED TO EXAMINER |
|
STPP | Information on status: patent application and granting procedure in general |
Free format text: ADVISORY ACTION MAILED |
|
STPP | Information on status: patent application and granting procedure in general |
Free format text: DOCKETED NEW CASE - READY FOR EXAMINATION |
|
STPP | Information on status: patent application and granting procedure in general |
Free format text: NON FINAL ACTION MAILED |
|
STPP | Information on status: patent application and granting procedure in general |
Free format text: RESPONSE TO NON-FINAL OFFICE ACTION ENTERED AND FORWARDED TO EXAMINER |